Hair waving appliance



G. STRCHER Dec. 14, 1937.

HAIR WAVING APPLIANCE 2 Sheets-Sheet l Filed Nov. '7, 1956 INV ENTOR GEO/Q 6 ST/Q/O/h FEL 47 424% -\TTORNEYb Dec. 14, 1937. STROHER 2,102,241

HAIR WAVING APPLIANCE Filed Nov. 7, 1956' 2 Sheets-Sheet 2 $5014? (1 S we 07/5/3 TTURNEYS Patented Dec. 14, 1937 UNITED STATES PATENT OFFICE Application November 7, 1936, Serial No. 109,637 In Great Britain October 5, 1936 1 Claim.

This invention relates to hair waving appliances, and refers more particularly to a heating clamp consisting of a ceramic material and used for the purpose of producing permanent hair waves.

The customary procedure in making permanent hair waves is to wind a strand of hair upon a rod and then to place an electrical heating element or clamp over the strand for the purpose of heating or baking the wound strand of hair. This heating element or clamp is usually cylindrical in form and is sometimes made of a plurality of concentric cylinders or layers, the heating wires being situated between these layers. Such constructions are expensive, heavy, easily breakable and inconvenient to manufacture.

An object of the present invention is the provision of a heating clamp which is simple in construction, inexpensive to manufacture and which will distribute the heat generated by the heating resistances evenly and uniformly over the entire wound strand of hair.

A further object is the provision of a heating clamp which is comparatively very light in weight and which will constitute an excellent accumulator of heat generated by the heating resistances.

The above and other objects of the present invention may be realized through the provision of a heating clamp comprising a pair of substantially semi-cylindrical portions or jaws, each of which consists of one piece of ceramic material and is provided with cavities or longitudinal and/or transverse grooves or bore holes containing the heating wires. If desired, the heating wires may be insulated from the ceramic jaws. The handle portions of the clamp may be provided with electrical contact prongs connecting the heating wires to a source of electrical energy.

Any desired number of heating wires interconnected in any suitable manner may be arranged within the cavities provided in the ocramic jaws.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawings showing by way of example preferred embodiments of the inventive idea:-

In the drawings:-

Figure 1 shows in side elevation a clamp constructed in accordance with the principles of the present invention;

Figure 2 is a sectional view of one of the jaws of the clamp on a larger scale;

Figure 3 is a cross-section through the clamp;

Figure 4 shows in end elevation a clamp of a somewhat different form;

Figure 5 is a side view of the clamp shown in Fig. 4;

Figure 6 is a section through one of the jaws of the clamp shown in Figs. 4 and 5; and

Figure '7 is a cross-section through this clamp.

The clamp shown in Figures 1, 2 and 3 of the drawings comprises two jaws 8 and 9 which consist of a ceramic material. A handle portion H] is firmly connected with the jaw 8 by any suitable means I I, while a second handle I2 is connected with the jaw 9 by the means l3. The handles l0 and i2 are provided with ear portions 54 and I5 carrying the pivot I6 around which the jaws 8 and 9 may be swung. Any suitable spring not shown in the drawings may be used for maintaining the clamp in the closed position.

As shown in Figure 2, the handle l2 comprises a bore hole through which the wires l1 and I8 extend. The handle consists preferably of a central portion l9 and two end portions 20 and 2| which are held together by a connecting bolt 22, provided with end disks 23 and 24 which are situated in cavities formed in the pieces 20 and 2! and are in engagement with washers 25 and 26, respectively.

A prong 21 is carried by the handle l2. The lower end of the prong 21 is situated within a cavity provided in the handle 12 and is conductively connected to the wire l1.

As shown by broken lines in Fig. 2, a socket 28 which is connected by a wire 29 to a source of electrical energy not shown in the drawings, may be placed over the prong 21.

An insulated wire 30 is electrically connected with the wire l8, the lower end of the wire 30 being situated in a bore hole formed in the handle I 2.

As shown in Figs. 1 and 3, the handle I!) is substantially similar in construction to the described handle l2. The handle l0 carries a prong 3| and supports the opposite end of the wire 3i! which is connected to a wire 32 situated within the interior of the handle II].

In accordance with the present invention, each of the jaws 8 and 9 is made of one piece of ceramic material, such as clay or porcelain. The jaw 8 is provided with a cut-out portion 33 which is formed upon the inner surface of the jaw 8. The jaw 9 is provided with a similar cut-out portion 34. A heating resistance having the form of a coil or winding 35 is situated within the cutout portion 34 of the jaw 9. The two ends of the insulated wire 36 and to the wire .39 leading to the prong 3!.

An important distinction between the described 7 construction and the oneshown in Figs. 4 to 7 of the drawings is that in the latter the heating wires 4i) to are situated within bore holes 46 to 5! provided in the interior of the jaws '52 and 5.3, eachof which consists of one .piece of ,ceramic material. V I

. An angular support ,54 is connected by bolts with the jaw 52. A handle 55 is connected .by

is connected ,bylbplts ,59 .to thejawi53 and isalso connected bybolts .60 .to .the handle 6|. 7

The handles 56 and .61 comprise cars 52 and 63 carrying a pivot 34 around which the jaws ma be wungn the examp e illustrated, the jaw ,52 comprises two cylindrical projections 65 and 56 which carry the prongs '6] and E8. The jaw 53 comprises two similar projecting portions 69 and {10 carrying the two prongs 7.! and 12. The wires 43, 434 and14'5 may be inter-connected in par allel by means of the wires '13 and 74 which are locatedin suitable grooves and which .are connected to 'theprongs H and '12, ,as indicated in Figures '6 \and YZ. v

The wires All, 4| and 42 carried by the jaw 52 maybe interconnected in parallel with each other and connected to the prongs 61 and'fifl in asimilar manner.

ing the wires 35 and 37. 7 .mitted 13013116 ceramic jaws 8 and 9 which will to difierent sources.

The inner surfaces of the jaws 52 and 53 may be covered by metallic layers Ill which are applied to the ceramic jaws by galvanization or any other suitable means. These metallic layers will concentrate the heat on the inside of the shell and will also strengthen the same.

The described clamps may be used in substantially the same manner as those known in the art.

When the clamp shown in Figures 1 to 3 of the :drawings is placed over a-wound strand of hair, the operator'will connect the prongs 21 and 3| to a source of electrical energy, thereby heat- This heat will be transaccumulate the heat and transmit it uniformly and evenly to :the wound strand of hair.

When the clamp shown in Figures 4 to 7 is used, the operator may connect the four prongs 61, 68, H and 12 to the same source of energy or With this construction it is possible to supply wheat ,to-ionly one of zthe two 7 jaws; thereby regulating the baking process;

The described .clamps ,are very'cheap vto Emanufacture, since .they =do: not consist of concentric layers and do not require expensive insulation The ceramic jflWSqQf vthese clamps constitute :an

excellent accumulator (of the-heat generated by the heating resistance. Another important ad-.

vantage of these clamps is that theyare extremely light in weight so that .a largeqnumber -of-such clamps may be used .upon the head of a person without causing inconvenience or discomfort.

What-is claimed .is:--

A heating clamp for hair .waving-purposescome prising a pairof articulated jaws, each of said 

